Installing 4TB Desktop in Windows 7 get only 1677.90 GB

When I formatted and partitioned a 4 TB on my computer I can only see 1677.90 GB. I changed to GPT but I may not have followed the correct procedure, I still only get 1677.90 GB. I tried to delete, reformat, nothing changed. I still get 1677.90 GB.

Win 7 is designed for 2TB or less drives. You need to start googling for ideas.

My drives over 2 TB were formatted on a Win 8 (now 10) at the time and they work fine. They have never been on the Win 7 although they are easily accessed from the other computer the drives are on.